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A duck's mass at birth was 0.05 kilogram. The duck gained approximately 0.042 kilogram each week. After how many weeks is the duck's mass 0.890 kilogram?

A duck's mass at birth was 0.05 kilogram. The duck gained approximately 0.042 kilogram each week. After how many weeks is the duck's mass 0.890 kilogram?
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A duck's mass at birth was 0.05 kilogram. The duck gained approximately 0.042 kilogram each week. After how many weeks is the duck's mass 0.890 kilogram?

asked
User Krv
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2 Answers

4 votes
21 weeks, I believe.
answered
User Muhamed Shafeeq
by
8.9k points
4 votes
0.890-0.05 = .840
.840/ 0.042 = 20
20 weeks

answered
User Heels
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7.7k points
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